Steam-jet for draft-regulators.



G. H. SCHARF. STEAM JET FOR DRAFT REGULATORS.

APPLICATION FILED FEB. H, 1914.

Patented Feb. 1, 1916.

12762232) Gragor 1 5654)? THE COLUMBIA PunjounAPI-l col, WASHINGTON. m c.

GREGORY I-I. SCI-IARF, OF YPSILANTI, MICHIGAN.

STEAM-JET FOR DRAFT-REGULATORS.

Specification of Letters Patent.

Patented Feb. I, 1916.

Application filed February 11, 1914. Serial No. 817,991.

To all whom it may concern Be it known that I, GREGORY H. SoHARr, a citizen of the United States of America, residing at Ypsilanti, in the county of Washtenaw and State of Michigan, have invented certain new and useful Improvements in Steam-Jets for Draft-Regulators, of which the following is a specification, reference being had therein to the accompanying drawin s.

Il Iy invention relates to that type of draft regulators for furnaces which is provided with a steam jet positioned to discharge across and above the fuel.

The invention resides in the novel construction and arrangement of the steam et, as will more fully hereinafter appear.

In the drawings, Figure 1 is a fragmentary, front elevation of a furnace with my invention applied thereto; Fig. 2 is a vertical section through the structure of Fig. 1.

Heretofore the nozzles or steam jets have been positioned in apertures formed through the brick work above the fuel doors, but this arrangement has been found to be very objectionable since by so locating the jets the latter are subjected to an intense heat and would frequently crystallize and break off when steam was introduced therethrough. liurthermore, when extended through the brickwork the condition of the jets could not be ascertained without completely removing the latter, and also necessitating a shutdown of boiler plant for installation of jets.

By my invention the jets A B are arranged within the door openings adjacent the top thereof, the jets being supported solely by a horizontal branch C of the steam supply pipe and being out of contact with the furnace Walls.

D is a bracket on the boiler front for securing the horizontal branch in place. Preferably the jets have a swiveled engagement as at E with couplings F in the branch 0, and the nozzles proper G have a detachable screw-threaded engagement with elbow joints H.

I are recesses in the top of the doors for receiving the jets when the doors are closed. With this arrangement the jet is in view when the fuel door is open, while the swivel connection permits the jet to be turned outward so that the nozzle may be readily detached and a new one replaced when required. Furthermore, the nozzle is not subjected to the intense heat that it would be if extended through the wall of the boiler front, and as it is not necessary to drill holes through the front wall, my improved device may be applied to a furnace when the latter is in operation.

What I claim as my invention is 1. In a draft regulator for furnaces, the combination of a door, a steam-supply pipe, a steam jet independent of said door, extending within the door opening adjacent the top thereof, said jet being adapted to be turned outward through the door opening.

2. In a draft regulator for furnaces, the combination of a door, a steam-supply pipe, and a swinging steam jet therefor extending within the opening closed by the door, the latter having a recessed portion for receiving the jet when the door is closed, said jet being of a size to permit the turning out ward thereof through the opening when said door is opened.

In testimony whereof I aiiiX my signature in presence of two witnesses.

GREGORY H. SCHARF.

Witnesses 7M. J. BELKNAP, JAMES P. BARRY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

